title: Characterization of two methanopterin biosynthesis mutants of Methylobacterium extorquens AM1 by use of a tetrahydromethanopterin bioassay.
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D001681:Biological Assay; D020601:Methylobacterium extorquens / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*; D009154:Mutation; D016366:Open Reading Frames; D000587:Oxidoreductases Acting on CH-NH Group Donors / Q000378:metabolism; D011622:Pterins / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D011622:Pterins; C036686:methanopterin; C042416:5,6,7,8-tetrahydromethanopterin; D000587:Oxidoreductases Acting on CH-NH Group Donors; C047126:methylenetetrahydromethanopterin dehydrogenase